Accumulation of organics in a water supply reservoir: Its cause, characteristics and implication on water quality management

S. W. Kim, Seungkwan Hong, E. Choi

Research output: Contribution to journalArticle

Abstract

The COD accumulation has been observed in reservoirs in Korea, and the cause of accumulation was investigated in this study. Samples were taken from various sources affecting the water quality of reservoir and leaching test was performed. The results indicated that the soil sample from forest area showed greater NBD COD discharge as much as 700 kg COD/ha/y than other samples. Further, NOM in the reservoir water during dry period normally represented 40% of hydrophilic and 60% of hydrophobic nature, but it was found the hydrophobicity dramatically increased to 80% during wet weather flow. The forest soil under leaching tests also showed considerably higher hydrophobic nature. This result clearly indicates the COD accumulation is significantly contributed by forest area as a diffuse source. NOM has been known as a precursor of DBP, but fortunately THM and HAA levels in drinking water in Korea are in a range of 20 μg/L and 4 μg/L, respectively, suggesting the current COD standard for source water must be adjusted.

Original languageEnglish
Pages (from-to)108-112
Number of pages5
JournalDesalination and Water Treatment
Volume2
Issue number1-3
DOIs
Publication statusPublished - 2009 Feb 1

Fingerprint

Quality management
Water supply
Leaching
Water quality
water supply
Soils
Hydrophobicity
leaching
Potable water
hydrophobicity
forest soil
drinking water
weather
water quality
Water
water quality management
soil
water
test

Keywords

  • Accumulation of NBD COD
  • Diffuse source
  • DOC
  • Hydrophobicity
  • NOM
  • Source water standard

ASJC Scopus subject areas

  • Pollution
  • Water Science and Technology
  • Ocean Engineering

Cite this

Accumulation of organics in a water supply reservoir : Its cause, characteristics and implication on water quality management. / Kim, S. W.; Hong, Seungkwan; Choi, E.

In: Desalination and Water Treatment, Vol. 2, No. 1-3, 01.02.2009, p. 108-112.

Research output: Contribution to journalArticle

@article{74e0210f6f3e43429d11a7f75ad91c4f,
title = "Accumulation of organics in a water supply reservoir: Its cause, characteristics and implication on water quality management",
abstract = "The COD accumulation has been observed in reservoirs in Korea, and the cause of accumulation was investigated in this study. Samples were taken from various sources affecting the water quality of reservoir and leaching test was performed. The results indicated that the soil sample from forest area showed greater NBD COD discharge as much as 700 kg COD/ha/y than other samples. Further, NOM in the reservoir water during dry period normally represented 40{\%} of hydrophilic and 60{\%} of hydrophobic nature, but it was found the hydrophobicity dramatically increased to 80{\%} during wet weather flow. The forest soil under leaching tests also showed considerably higher hydrophobic nature. This result clearly indicates the COD accumulation is significantly contributed by forest area as a diffuse source. NOM has been known as a precursor of DBP, but fortunately THM and HAA levels in drinking water in Korea are in a range of 20 μg/L and 4 μg/L, respectively, suggesting the current COD standard for source water must be adjusted.",
keywords = "Accumulation of NBD COD, Diffuse source, DOC, Hydrophobicity, NOM, Source water standard",
author = "Kim, {S. W.} and Seungkwan Hong and E. Choi",
year = "2009",
month = "2",
day = "1",
doi = "10.5004/dwt.2009.158",
language = "English",
volume = "2",
pages = "108--112",
journal = "Desalination and Water Treatment",
issn = "1944-3994",
publisher = "Taylor and Francis Ltd.",
number = "1-3",

}

TY - JOUR

T1 - Accumulation of organics in a water supply reservoir

T2 - Its cause, characteristics and implication on water quality management

AU - Kim, S. W.

AU - Hong, Seungkwan

AU - Choi, E.

PY - 2009/2/1

Y1 - 2009/2/1

N2 - The COD accumulation has been observed in reservoirs in Korea, and the cause of accumulation was investigated in this study. Samples were taken from various sources affecting the water quality of reservoir and leaching test was performed. The results indicated that the soil sample from forest area showed greater NBD COD discharge as much as 700 kg COD/ha/y than other samples. Further, NOM in the reservoir water during dry period normally represented 40% of hydrophilic and 60% of hydrophobic nature, but it was found the hydrophobicity dramatically increased to 80% during wet weather flow. The forest soil under leaching tests also showed considerably higher hydrophobic nature. This result clearly indicates the COD accumulation is significantly contributed by forest area as a diffuse source. NOM has been known as a precursor of DBP, but fortunately THM and HAA levels in drinking water in Korea are in a range of 20 μg/L and 4 μg/L, respectively, suggesting the current COD standard for source water must be adjusted.

AB - The COD accumulation has been observed in reservoirs in Korea, and the cause of accumulation was investigated in this study. Samples were taken from various sources affecting the water quality of reservoir and leaching test was performed. The results indicated that the soil sample from forest area showed greater NBD COD discharge as much as 700 kg COD/ha/y than other samples. Further, NOM in the reservoir water during dry period normally represented 40% of hydrophilic and 60% of hydrophobic nature, but it was found the hydrophobicity dramatically increased to 80% during wet weather flow. The forest soil under leaching tests also showed considerably higher hydrophobic nature. This result clearly indicates the COD accumulation is significantly contributed by forest area as a diffuse source. NOM has been known as a precursor of DBP, but fortunately THM and HAA levels in drinking water in Korea are in a range of 20 μg/L and 4 μg/L, respectively, suggesting the current COD standard for source water must be adjusted.

KW - Accumulation of NBD COD

KW - Diffuse source

KW - DOC

KW - Hydrophobicity

KW - NOM

KW - Source water standard

UR - http://www.scopus.com/inward/record.url?scp=77954392871&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954392871&partnerID=8YFLogxK

U2 - 10.5004/dwt.2009.158

DO - 10.5004/dwt.2009.158

M3 - Article

AN - SCOPUS:77954392871

VL - 2

SP - 108

EP - 112

JO - Desalination and Water Treatment

JF - Desalination and Water Treatment

SN - 1944-3994

IS - 1-3

ER -